Australian-founded functional-HIIT chain launched in 2013, F45 Training built its East Hillcrest location into 1255A University Avenue in 92103 around the brand's 45-minute rotating-circuit format. Station-based team training cycles every 35 to 45 seconds with screen-displayed exercise demos drawn from a global workout library of cardio, resistance, and hybrid days, a high-frequency loading pattern that sits upstream of the spinal decompression work handled at NuSpine Chiropractic. The East Hillcrest studio flags itself as a transgender safe space and an LGBTQ+-welcoming studio, a positioning the franchisee picked intentionally for the University Avenue corridor. The Challenge, F45's recurring 8-week program, pairs class attendance with a macro-counted meal plan and body-composition tracking through the member app. Hollywood-format sessions close out challenge weeks with a longer mixed-modality circuit built to break plateaus, a high-intensity block structurally distinct from the slow-tempo restorative programming run at Honeybee Hive Yoga. The most technical slot on the schedule is the benchmark retest session, where members compare baseline lifts and conditioning metrics against their week-one numbers to validate Challenge outcomes.